Let's divide 996547 by 20
The aim is to understand the frequency of 20 in 996547.

On to step 1:
9 divided by 20 is 0 with a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Grab the next digit (9) from the dividend, add it to 9, then carry on: 99 / 20

Moving on to step 2:
When dividing 99 by 20, we get 4 with a remainder of 19.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Subtract 80 from 99 to get 19.
Fetch the next digit (6) from the dividend, attach it to 19 and continue: 196 / 20

On to step 3:
When dividing 196 by 20, we get 9 with a remainder of 16.
The number 9 becomes the next digit in our result. 
Result so far: 49.0
If we subtract 180 from 196, we get 16.
Include the next digit (5) from the dividend after 16, then repeat: 165 / 20

Let's proceed to step 4:
If we divide 165 by 20, we get 8 and a remainder of 5.
Record the quotient 8 as the next digit in the result. 
Result so far: 498.0
Deduct 160 from 165 and we're left with 5.
Include the next digit (4) from the dividend after 5, then repeat: 54 / 20

On to step 5:
The number 20 fits into 54 2 times, leaving a remainder of 14.
The next digit of our result is 2. 
Result so far: 4982.0
Deduct 40 from 54 and we're left with 14.
Take the next digit (7) from the dividend and append it to 14, then repeat: 147 / 20

Advancing to step 6:
20 can be fit into 147 7 times, resulting in a remainder of 7.
Write down 7 as next digit of the result. 
Result so far: 49827.0
If we subtract 140 from 147, we get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Going ahead to step 7:
The number 20 fits into 70 3 times, leaving a remainder of 10.
The next digit of our result is 3. 
Result so far: 49827.3
If we subtract 60 from 70, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 8:
20 goes into 100 5 times with a remainder of 0.
The next digit of our result is 5. 
Result so far: 49827.35
If we subtract 100 from 100, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 9:
If we divide 0 by 20, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 49827.35
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 10:
0 divided by 20 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 49827.35
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 49827.35 and a remainder of 0.0.